مقال بحثي وصول مفتوح Investigating the Relationship between the Infection Caused by Toxoplasma gondii and the Rate of Infection with Covid-19 Disease and Its Severity Maryam Mozouni, Aliehsan Heidari, Shaghayegh Alipour Aval وآخرون · Iranian Journal of Parasitology · 2026 · 10.18502/ijpa.v21i2.22090